X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Frelocation%2Fgr_sand.ma;h=e0430e92b7798f898ef3db49b8035e3c641554e7;hp=79fd584d1c8cda21a0aae5af621d76ceccd951bb;hb=2ed8d2abcc3b0687141b627061b63350a0b200bd;hpb=b367de0252e88d6b0476648d5ceac7e4aeffca27

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/gr_sand.ma b/matita/matita/contribs/lambdadelta/ground/relocation/gr_sand.ma
index 79fd584d1..e0430e92b 100644
--- a/matita/matita/contribs/lambdadelta/ground/relocation/gr_sand.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/gr_sand.ma
@@ -15,7 +15,7 @@
 include "ground/notation/relations/rintersection_3.ma".
 include "ground/relocation/gr_tl.ma".
 
-(* RELATIONAL INTERSECTION FOR GENERIC RELOCATION MAPS ***********************************************************)
+(* RELATIONAL INTERSECTION FOR GENERIC RELOCATION MAPS **********************)
 
 (*** sand *)
 coinductive gr_sand: relation3 gr_map gr_map gr_map ≝
@@ -37,7 +37,7 @@ interpretation
   "relational intersection (generic relocation maps)"
   'RIntersection f1 f2 f = (gr_sand f1 f2 f).
 
-(* Basic properties *********************************************************)
+(* Basic constructions ******************************************************)
 
 (*** sand_refl *)
 corec lemma gr_sand_idem:
@@ -60,7 +60,7 @@ corec lemma gr_sand_comm:
 ] /2 width=7 by/
 qed-.
 
-(* Basic inversion lemmas ***************************************************)
+(* Basic inversions *********************************************************)
 
 (*** sand_inv_ppx *)
 lemma gr_sand_inv_push_bi: